The report released Monday states Fisher may have taken cocaine three days before the Dec. 23 flight on which she became ill. She died four days later.
It also found traces of heroin and MDMA, which is also known as ecstasy, but that they could not determine when Fisher had taken those drugs. The findings were based on toxicology screenings done on samples taken when the "Star Wars" actress arrived at a Los Angeles hospital.
Coroner's officials ruled Fisher died from sleep apnea and a combination of other factors.
PHOTOS: Carrie Fisher through the years
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